Rigid Foam Insulation Fire Rating

This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses.

Rigid foam insulation fire rating.

Because of this i often get questions about which type of foam board insulation to use and what r values these products provide. Thermax sheathing is a nonstructural rigid board insulation with a glass fiber infused polyisocyanurate foam core laminated between 1 0 mil smooth reflective aluminum faces. Exterior of wall with furring strips on top to form a vented rain screen behind siding. Rigid pir insulation boards fire rated future foams pir board is a non structural polyisocyanurate insulation board consisting of a rigid insulation core sandwiched between two high performance foil facings to create a tough durable light weight board that has high insulation properties with a high level of fire performance.

It is denser than eps and provides more r value with a rating of 5 per inch of thickness. Fire safety guidelines for use of rigid polyurethane and polyisocyanurate foam insulation in building construction. Pir foam panels laminated with pure embossed aluminium foil are used for fabrication of pre insulated duct that is used for heating ventilation and air conditioning systems. You can even place it under the foundation slab.

Install it anywhere from the roof to the foundation. Since most fire codes call for a minimum of half hour fire rating over foam insulations paneling would probably not provide a sufficient fire barrier over the foam insulating board. The glass fiber reinforcement provides improved fire performance and dimensional stability. And suppliers of foam insulation products for specific recommendations.

Its thermal conductivity has a typical value of 0 16 btu in hr ft 2 f 0 023 w m k depending on the perimeter area ratio. What are the fire code rules and general fire safety concerns when using rigid foam panels in the following applications. Rigid insulation is one of the best tools to reduce your energy costs. Thermax sheathing can be installed exposed to the.

New 1 2 inch drywall is usually called for and in some installations fire rated drywall or thicker drywall may be required for local codes and for certain. Facings and maximum flame spread and smoke ratings for the foam core 11 some metal faced polyurethane and polyisocyanurate laminated panels may be exempt. Thermax sheathing specially designed to hold a class a fire rating. There are three basic foam insulation board products on the.

Icynene spray foam insulation products have the flame spread and smoke developed indexes required have been tested in accordance with and comply with the acceptance criteria of nfpa 285 and there are many wall and ceiling assemblies that contain icynene products and are fire resistance rated in accordance with astm e 119. Icynene is committed. Pir is typically produced as a foam and used as rigid thermal insulation. They keep your home at a comfortable temperature without the need to crank your heat.

Foam board insulation types. Exterior of roof with furring strips on top to form a vented roof plain interior of roof to form an air tight vent baffle a less traditional approach but a possible retrofit.